| (19) |
 |
|
(11) |
EP 0 226 362 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
14.10.1987 Bulletin 1987/42 |
| (43) |
Date of publication A2: |
|
24.06.1987 Bulletin 1987/26 |
| (22) |
Date of filing: 27.11.1986 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE ES FR GB IT LI NL SE |
| (30) |
Priority: |
02.12.1985 US 803177
|
| (71) |
Applicant: APPLETON PAPERS INC. |
|
() |
|
| (72) |
Inventors: |
|
- Vervacke, Steven L.
()
- Petersen, Thomas C.
()
|
|
| |
|
| (54) |
Thermally responsive record material |
(57) Thermally responsive record material has an active coating on a substrate, especially
paper. The active coating contains chromogenic material and, as co-reactant, bis (hydroxyphenyl)-phenyl
alkane, especially bis (4-hydroxyphenyl)-phenyl butane. These co-reactants give improved
background and intensity performance especially useful in facsimile papers.